Holley 3972121 4555 dated December 1969

Discussion in 'VIN, Trim Tag & Drivetrain Decoding' started by rhaz70z28, Jan 29, 2019.

  1. rhaz70z28

    rhaz70z28 New Member

    4
    0
    Feb 15, 2012
    Clayton, CA
    Thank you very much. I have a 1970 Z28 04D and I have this carburetor, but I wasn't even sure if earlier build dates exist that would have used it.
     
  2. COPO

    COPO Veteran Member Lifetime Gold Member

    16,865
    371
    Sep 15, 1999
    Ontario, Canada
    My 70 Z28 cowl tag build date is
    05E
    0=1970
    5=May
    E=5th week

    My 4555 Holley is dated
    032
    0=1970
    3=March
    2=2nd week
     
  3. Budz

    Budz Veteran Member Lifetime Gold Member

    3,009
    54
    Mar 17, 2002
    Ashburn, Va USA
    The carb on my 04D Z/28 is dated Feb...023
     
  4. x77-69z28

    x77-69z28 Veteran Member

    275
    8
    Feb 5, 2010
    long island, new york
  5. 70lt1z28

    70lt1z28 Veteran Member Gold Member

    2,639
    392
    Oct 3, 1999
    Beavercreek, Ohio, USA
    My 04B car has this date also.
     
  6. rhaz70z28

    rhaz70z28 New Member

    4
    0
    Feb 15, 2012
    Clayton, CA
    Thank you everyone, this is very helpful for me. It looks like 023 date would be correct for 04D. Then sometime later, probably when they exhausted the Holley build date inventory there was a switch to the next build date.
     

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